recycled racket string material

By transforming recycled racket strings into a composite material with a matrix component, the recycled racket string material addresses the industry's waste management and sustainability challenges, offering a bio-sourced, non-polluting solution for construction and design.

FR3156057A1Inactive Publication Date: 2025-06-06PROJETIC
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Patent Information

Application Number
FR2023013547
Authority / Receiving Office
FR · FR
Patent Type
Applications
Current Assignee / Owner
Filing Date
2023-12-05
Publication Date
2025-06-06
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

Product made from recycled racket strings, intended to be transformed into a material for use in construction, architecture and design.
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Description

Title of the invention: recycled racket string material Technical field of the invention

[0001] The invention relates generally to the field of structural and aesthetic materials intended for architecture, design or even construction and / or manufacturing such as sub-assemblies of buildings or furniture.

[0002] The invention relates more specifically to a recycled racket string material having structural properties and also making it possible to obtain a satisfactory aesthetic effect. State of the prior art

[0003] Materials are known in the prior art which have structural properties when it comes to use intended for construction or design in particular. These materials are for example bricks, concrete, but also thermoplastic resins such as PETE or PET (polyethylene terephthalate), HDPE or HDPE (high density polyethylene), V or PVC (polyvinyl chloride), LDPE or BDPE (low density polyethylene), PP (polypropylene) or PS (polystyrene).

[0004] The field of construction and design is, in general, very polluting and consumes a lot of water and energy. It is therefore necessary to find new ecological and non-polluting materials. In addition, we live in a society of intensive consumption where waste is piling up more and more. It is therefore preferable to find solutions to recycle this waste.

[0005] One aim of creating a material based on recycled racket string is to provide a new outlet for recycling this waste. Another aim of the present invention is also to provide a new bio-sourced and non-polluting manufacturing and construction material.

[0006] The current market does not offer any material solutions made from recycled racket strings. Statement of the invention

[0007] The invention aims to remedy all or part of the drawbacks of the state of the art by proposing in particular a material making it possible to provide a new outlet for the recycling of racket string waste (tennis, tennis, squash or badminton among others), but also to provide a new bio-sourced, non-polluting construction and / or building material offering a new resource in terms of design.

[0008] To do this, according to a first aspect of the invention, a product is proposed to be transformed with a view to manufacturing a material intended in particular for the construction and design, the product comprising a reinforcing component, intended to form a reinforcement, based on recycled racket strings and a matrix component, intended to form a matrix, comprising a glue which may be of animal and / or vegetable origin and / or a resin.

[0009] A "glue" is understood to mean a product of liquid, gelatinous or pasty consistency used to bind parts together. These glues can be natural, animal or vegetable resins, or synthetic (industrial) resins. These resins can be Epoxy resins, polyester resins, polyurethane resins or thermoplastic resins such as PETE or PET (polyethylene terephthalate), HD PE or HDPE (high density polyethylene), V or PVC (polyvinyl chloride), LDPE or BDPE (low density polyethylene), PP (polypropylene) or PS (polystyrene).

[0010] "Recycled racket string" means any string for a tennis, tennis, squash or badminton racket, regardless of its shape, length, diameter, color, chemical composition, or whether it is of natural or synthetic origin. With, in France, some 1,000,000 tennis licensees spread across 7,600 clubs, to which are added approximately 300,000 squash players and 200,000 badminton players, strings represent significant waste. In addition to these players, who consume between 1 and 2 strings per year, there are also high-level and professional players who can consume dozens of strings per week during their training sessions but also during tournaments. Such an invention therefore offers an advantageous solution for recycling this sports waste.

[0011] According to one embodiment, the proportion of recycled racket string in the final material will depend on the technical specifications expected by the construction need and / or the design need. The material may be flexible or rigid depending on the concentration of recycled racket string and the resin used. The design may want a transparent glue with a low string concentration, but it may also want a high string concentration. The expected aesthetic effect may differ from one product to another.

[0012] According to one embodiment, the pieces of racket string have a length between 1 mm and 12 m, depending on the method of removing the strings and cutting them before use.

[0013] According to one embodiment, the pieces of racket string have a size less than 1 mm, resulting from very fine or even ultra fine grinding.

[0014] According to one embodiment, the resins may be of recycled origin.

[0015] According to one embodiment, the material may be transparent, allowing the pieces of rope and thus reveal a satisfactory aesthetic effect

[0016] According to one embodiment, the pieces of ropes can be intertwined. between them. Depending on the concentration of ropes desired by the designer, interweaving can provide superior structural strength, like fiberglass, and also provide a satisfactory aesthetic effect.

[0017] According to one embodiment, the material can be prepared by molding

[0018] According to one embodiment, the material can be prepared by injection

[0019] According to an advantageous technical configuration, the racket string represents at least 5%, preferably at least 20%, and at most 80%, preferably at most 75% of the mass of the product.

[0020] According to one method of construction, the racket string is a recycled racket string, that is to say one originating from a first life cycle of a product and whose use as a component of the material gives it a second life cycle.

[0021] The invention aims at the construction of material which can be cut, like a wooden board, in order to obtain the desired dimensions.

[0022] The invention aims at the construction of material of any possible shape and any possible dimension.

[0023] The invention aims at the construction of material of any possible color

[0024] The invention aims at the construction of material of any possible surface texture.

[0025] The invention aims at the construction of a product of any possible shape and of any possible dimension.

[0026] The invention aims at the construction of a product of any possible color

[0027] The invention aims at the construction of a product of any possible surface texture.

Claims

Claims

1. Product intended to be transformed for the purpose of manufacturing a material intended in particular for construction, architecture and design. The product comprising a reinforcing component, intended to form a reinforcement, based on recycled racket strings and a matrix component, intended to form a matrix, comprising a glue of natural, animal and / or vegetable origin, and / or a resin of any type.

2. Product according to claim 1, characterized in that the racket string represents at least 5%, preferably at least 20%, and at most 80%, preferably at most 75% of the mass of the product.

3. Product according to claim 1 or 2, characterized by recycled strings from tennis, squash, badminton and tennis rackets.

4. Manufacturing process by molding, to obtain the product according to one of claims 1 to 3.

5. Injection manufacturing method, to obtain the product according to one of claims 1 to 3.

6. Method according to one of claims 4 or 5, characterized in that the pieces of rope have a length of between 1 mm and 12 m.

7. According to one of claims 4 to 6, manufacturing method characterized in that the products can have any shape, any final texture, depending on the expressed need.

8. Manufacturing method according to one of claims 4 or 5, characterized in that the products can be cut, like a wooden board.

Citation Information

Patent Citations

  • Recycled plastics material

    EP3590998A1

  • Process of manufacturing of adornment artifacts using recycled strings of tennis rackets

    US20210259373A1

  • Method and Device for Recycling Ropes

    US20220212370A1